Issue with PSR-0 autoloading

I am trying to use this composer package with a new project I am working on https://packagist.org/packages/activecollab/activecollab-sdk. However when i try and create a new class I keep getting the following errors.

Fatal error: Class 'ActiveCollab\Client' not found

The file that is throwing this error looks like this.

require "vendor/autoload.php";

new ActiveCollab\Client;

Which is just being used to test if the files are being loaded in properly. The composer.json of the file which I am trying to use looks like such. And I have a feeling the problem is in this file but I can't figure out what.

stuff...

"autoload": {
      "psr-0": {
        "ActiveCollab\\": "ActiveCollab"
      }
    }

...stuff

Folder structure of package

Also looking at the autload_namespaces.php file it is being generated as such.

<?php

// autoload_namespaces.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    'ActiveCollab' => array($vendorDir . '/activecollab/activecollab-sdk/ActiveCollab'),
);

I have used psr-0 in some composer packages of my own and everything looks to be right except maybe the camel case in the namespace but i don't see this as being disallowed in the php proposal for psr-0.

Thanks for any help this has been driving me crazy.

Solution

The thing is: You cannot simply add a composer.json file with a random autoloading configuration and hope that it works - it actually has to match the naming scheme you are using. That is what this project got wrong, and nobody tested it. Which probably means nobody uses this library, and you can expect no support from the creators due to lack of interest.

But let's see how they react on my pull request to get things back to working again.